"Walkin The Dog" (Joke)

[RocketManAA]

A little girl asked her Mom, Mom, may I take the dog for a walk
around the block? Mom replies, No, because she is in heat.

What's that mean? asked the child.

Go ask your father. I think he's in the garage.

The little girl goes to the garage and says, Dad, may I take Sandy
for a walk around the block? I asked Mom, but she said the dog was
in heat, and to come to you.

Dad said, Bring Sandy over here. He took a rag, soaked it with
gasoline, and scrubbed the dog's backside with it to disguise the
scent, and said OK, you can go now, but keep Sandy on the leash and only go one time round the block.

The little girl left and returned a few minutes later with no dog on
the leash. Surprised, Dad asked, Where's Sandy?

The little girl said, She ran out of gas about halfway down the
block, so another dog is pushing her home.